Speech recognition in noise for cochlear implant listeners: benefits of residual acoustic hearing

Christopher W Turner; Bruce J Gantz; Corina Vidal; Amy Behrens; Belinda A Henry

doi:10.1121/1.1687425

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Speech recognition in noise for cochlear implant listeners: benefits of residual acoustic hearing

Journal article

Open access

Peer reviewed

Speech recognition in noise for cochlear implant listeners: benefits of residual acoustic hearing

Christopher W Turner, Bruce J Gantz, Corina Vidal, Amy Behrens and Belinda A Henry

The Journal of the Acoustical Society of America, Vol.115(4), pp.1729-1735

04/2004

DOI: 10.1121/1.1687425

PMID: 15101651

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Abstract

The purpose of this study was to explore the potential advantages, both theoretical and applied, of preserving low-frequency acoustic hearing in cochlear implant patients. Several hypotheses are presented that predict that residual low-frequency acoustic hearing along with electric stimulation for high frequencies will provide an advantage over traditional long-electrode cochlear implants for the recognition of speech in competing backgrounds. A simulation experiment in normal-hearing subjects demonstrated a clear advantage for preserving low-frequency residual acoustic hearing for speech recognition in a background of other talkers, but not in steady noise. Three subjects with an implanted "short-electrode" cochlear implant and preserved low-frequency acoustic hearing were also tested on speech recognition in the same competing backgrounds and compared to a larger group of traditional cochlear implant users. Each of the three short-electrode subjects performed better than any of the traditional long-electrode implant subjects for speech recognition in a background of other talkers, but not in steady noise, in general agreement with the simulation studies. When compared to a subgroup of traditional implant users matched according to speech recognition ability in quiet, the short-electrode patients showed a 9-dB advantage in the multitalker background. These experiments provide strong preliminary support for retaining residual low-frequency acoustic hearing in cochlear implant patients. The results are consistent with the idea that better perception of voice pitch, which can aid in separating voices in a background of other talkers, was responsible for this advantage.

Analysis of Variance

Hearing Loss - physiopathology

Hearing Loss - therapy

Humans

Adult

Female

Male

Noise - adverse effects

Cochlear Implants

Speech Perception - physiology

Details

Title: Subtitle: Speech recognition in noise for cochlear implant listeners: benefits of residual acoustic hearing
Creators: Christopher W Turner - Dept. of Speech Pathology and Audiology, Dept. of Otolaryngology Head and Neck Surgery, University of Iowa, Iowa City, Iowa 52242, USA
Bruce J Gantz
Corina Vidal
Amy Behrens
Belinda A Henry
Resource Type: Journal article
Publication Details: The Journal of the Acoustical Society of America, Vol.115(4), pp.1729-1735
DOI: 10.1121/1.1687425
PMID: 15101651
NLM abbreviation: J Acoust Soc Am
ISSN: 0001-4966
eISSN: 1520-8524
Publisher: American Institute of Physics; United States
Grant note: P50 DC000242 / NIDCD NIH HHS 2 P50 DC00242 / NIDCD NIH HHS RR00059 / NCRR NIH HHS 1 R01 DC 000377 / NIDCD NIH HHS
Language: English
Date published: 04/2004
Academic Unit: Communication Sciences and Disorders; Neurosurgery; Otolaryngology
Record Identifier: 9984007174302771

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